Understanding Normality and Percentage Concentration
* Normality (N): Represents the number of gram equivalents of a solute per liter of solution. For HCl, normality is the same as molarity because each mole of HCl provides one mole of H+ ions.
* Percentage Concentration: Indicates the mass of solute per 100 units of mass or volume of solution. We'll use mass/volume percentage (w/v) here.
Calculation Steps
1. Convert Normality to Molarity: Since normality and molarity are the same for HCl, a 0.1 N HCl solution is also a 0.1 M HCl solution.
2. Calculate the mass of HCl in 1 liter of solution:
* Molar mass of HCl = 36.46 g/mol
* Mass of HCl = (0.1 mol/L) * (36.46 g/mol) = 3.646 g/L
3. Calculate the percentage concentration (w/v):
* Percentage concentration = (mass of solute / volume of solution) * 100%
* Percentage concentration = (3.646 g / 1000 mL) * 100% = 0.3646%
Therefore, a 0.1 N HCl solution has a percentage concentration of approximately 0.3646% (w/v).
